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A Space-Ground Integrated Large-Scale Access Method Based on Satellite-Ground Integration

An access method and large-scale technology, applied in electrical components, radio transmission systems, transmission systems, etc., can solve problems such as limited coverage of terrestrial communication networks, and achieve the effects of suppressing interference, high spectral efficiency, and low implementation complexity

Active Publication Date: 2021-08-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of limited coverage of the ground communication network in the prior art, and design a kind of space-ground integrated network to provide an efficient access method for future wireless communication, and then propose a satellite-ground combination Space-ground integration large-scale access method

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  • A Space-Ground Integrated Large-Scale Access Method Based on Satellite-Ground Integration
  • A Space-Ground Integrated Large-Scale Access Method Based on Satellite-Ground Integration
  • A Space-Ground Integrated Large-Scale Access Method Based on Satellite-Ground Integration

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Embodiment Construction

[0050] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0051] The system block diagram of a space-ground integrated large-scale access method proposed by the present invention is as follows figure 1 As shown, the satellite has K sat root antenna, the ground base station has K BS One antenna is configured for each satellite user and base station user. Users in different beam areas share one beam, so that serial interference cancellation is performed within their respective areas, thereby reducing the complexity of serial interference cancellation. The satellite earth station receives the training sequence from the user to estimate part of the channel state information, and the base station estimates part of the channe...

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Abstract

The invention discloses a satellite-ground integrated space-ground large-scale access method, which relates to the field of wireless communication. Both low-orbit satellites and ground base stations use multi-beam technology to increase the overall system capacity. Satellites cover multiple areas. Satellite users in each area share the same beam. There may be base stations in each area. Base station users are divided into multiple clusters according to their location, and each cluster shares a beam. The satellite and the base station use channel estimation to obtain the channel state information of their respective users, and then perform superposition coding on the transmitted signal of each beam according to the channel information, and finally transmit the superposition coded signal through the beamforming network. After receiving the signal, the user first decodes the user signals with weaker channel gain in the beam area, removes the signals of these users, and finally decodes its own signal. The invention provides an effective wireless access method for realizing a large-scale information network integrating space and ground.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a space-ground integrated large-scale access method for satellite-ground integration. Background technique [0002] The past few decades have witnessed the surge in demand and the rise of new applications in the communication industry, and a large number of technological innovations and theoretical breakthroughs have built reliable wireless communication networks generation after generation. This year, the fifth-generation (5G) communication network has been gradually implemented. Compared with the fourth-generation (4G) Long-term Evolution Advanced (LTEA) system, the fifth-generation (5G) network has a massive device connection capability and a higher service flow capability. And customized user service experience needs. However, although decades of development have produced a wealth of technologies to enhance terrestrial networks, there are still some challenges that terr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18519H04B7/18558
Inventor 褚建杭陈晓明
Owner ZHEJIANG UNIV